Gustav adolf schmitz



G. A. SOH'MIT Z. DEVICE FOR- FEEDING OXYGEN OR OARBONIG ACID INGIRGULATING BATHING WATERS.

No. 573,927. Patented Dec. 29, 1896;

UNITED STATES ATENT IFFICE.

GUSTAV ADOLF SOI-IMITZ, OF HANOVER, GERMANY.

DEVICE FOR FEEDlNG OXYGEN 0R CARBONIC ACID IN CIRCULATINGBATHlNG-WATERS.

SPECIFICATION forming part of Letters Patent No. 573,927, dated December29, 1896; Application filed May 4, 1896. Serial No. 590,139. (No model.)Patented in Germany October 28,1895,No. 86,540.

To all whom it may concern.-

Be it known that I, GUsrAv ADOLF SCHMITZ, a resident of the city ofHanover, Empire of Germany, have invented certain new and usefulImprovements in Devices for Feeding Oxygen or Carbonic Acid inCirculating Bathing-Waters, (the same being patented to me in Germany,No. 86,540, dated October 28, 1895,) of which the following is aspecification.

The object of the present invention is to convey, in as abundant aspossible a quantity, oxygen or carbonic acid in bath-water. The greatpoint is to make the water absorb a large quantity of the substances,and this can occur only by an energetic circulation.

In the accompanying drawing, which shows a side elevation of theapparatus, partly in section, D is the bath-tub, into which thecirculating water is led through the inlet-pipe a, while I) is the tubewhich conveys the water back from the bath-tub to the pump B. This pumpB is constructed in such a manner that the proportion of oxygen allowedto enter is exactly regulatedaccording to the speed of the circulationof the water and the pressure in the steel bottle Z. To that end thepumpcylinder is provided with a boring at c, which is covered oruncovered by the piston K, acting as a slide-valve. It is free when thepiston has reached its highest elevation. WVhen in that position, thelower side of the piston fits close to the upper edge of theinlet-opening or boring, so that when the pump rotates the oxygencontained in the reservoir Z will have only a moment to enter thepump-cylhnder, as at the next moment and during the entire downwardstroke of the piston said opening will be closed.

The feature of the invention is thus thata circulation of water takesplace in which the feeding of gas can exactly be regulated, the samebeing always proportionate to the number of revolutions and to thepressure in the flask, both of which can be regulated as desired. Thesimplest form of construction is shown in the drawing. If we considerthat such a motor is frequently used, for instance, in hospitals, &c.,so that a tight closing of the piston and of the sliding organs is notrequired, the piston can, at a certain point, release a valve whoseshutting ofi must be tight and safe. The inlet-pipe C6 is provided witha heating devicein order to compensate for the heat lost by thecirculation, if desired. It is evident that with this method of feedingthe oxygen or carbonic acid the water will absorb the gases in a perfectmanner, while the pressure must be considered as a very effective factorin this case. It may be remarked, moreover, that the proportion ofoxygen or carbonic acid remains the same until the close of theoperation, and the same can be increased at the end of the bath, as thepressure in the flask Z, which is generally maintained at tenatmospheres, and the rotations of the machine can be optionallyincreased.

The steel flask Z is provided with a pressure-reduction valve whichkeeps the pressure constant until said flask is empty.

A is a driving-motor; B, the pump; K, the piston, working as a slide; 0,the inlet-orifice Z, the oxygen-reservoir, which is under a constantpressure, and D the bath-tub, with the suction-pipe a, the forcing-pipeb, and the outlet-pipe cl.

, I claim- 1. In combination with a bath-tuba pump, the pipes connectingthe same with the tub for the free circulation of water, a gas-tank anda connection between the same and the water-circulating system,substantially as described.

2. In combination with a bath-tub, a pump with its piston, the pipesconnecting the same with the tub for the free circulation of the water,a gas-tank and a connection between the same and the pump, the piston ofsaid pump regulating the amount of gas supplied to the circulatingsystem, substantially as dcscribed.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

GUSTAV ADOLF SOHMITZ.

Witnesses PAUL SUNDER, II. MENELL.

